Move toward the right and drop into the hole. Using the Knight, throw a hammer to the left in order to break open the rock, and then hit the Critter in the eye to chase it away. Remove the "plug" in the pipe just to the left of the platform on the right. Use the two pieces of pipe to build a curve blowing the wind upwards, and then place the plug into the empty pipe beneath the ledge above you. Float upwards and land on top of the plug, then jump up to proceed. Use your shield to spill the first acid burst down the drain, and avoid the second. After this there will be a wave of Salamanders. Note the spike ball directly above you, and place a full-size crate on it. Grapple up toward the bucket using the Thief's grappling hook, climb on top of it, and then leap onto the crate. Conjure a crate on the other side of the chasm using the Wizard, and then place a plank across the gap.

Once you're on the other side, stand directly in the middle of the next ledge and allow all the spike balls to go past overhead. At the next pit, conjure a crate, leap onto it as Pontius, throw a hammer up and toward the left, and then jump backwards. You'll have to be fast, as the acid will eat through the crate. This will drop a rock you can use to get across the acid. Slide the rock 3/4s of the way to the right, use another temporary crate to leap onto the acid, then across toward the rock. Simply build a ramp to get out and headed toward the next section.

Next, you will face a wave of Salamanders. Pull the switch to bring up the dropping platforms, and either leap across them, watching your timing and not being afraid to jump back when you need to buy a little more time, or swing overhead using the bucket and grappling hook. Pull the switch in the middle of the next section to drain the pool to the left. Descend, cut the log to the left loose, and then carry it up. Use the two barrels to get as far into the water as you can. Place a large plank on the ledge to the right, then create another one and place it on top of it, about halfway down its length. This will tip the whole construction toward you, allowing you to run up one plank to the second one, before they all fall into the water.

Leap over the acid pit and onto the first cog. There's a plank above you that you can grapple to and get over the second one. Look out for Spiders! Head toward the left and use the grapple to ascend to the next ledge. Use the barrel above you on the left to blow the space open, then throw a hammer straight up. Use a couple of crates to ascend, and then use the grapple to get the rest of the way up.

Use the Wizard's levitate power to rotate the wheel here to get some momentum, then drop a crate onto the platform toward the left in order to raise the one on the right. Leap to the platform. Hop across the dropping platform and grapple above you to fight off some more Spiders and acquire a collectible in the process. Look to your right where the spiked balls are dropping and you will see a fragile point in the floor. Hit it to stop some of the acid from flowing your way and the path ahead will become easier to traverse. On the other side, you'll want to jump from the dropping platform onto a plank or crate to prevent you from taking too much damage, then leap toward the right and grapple to safety. There are some Salamanders here too, kill them.

Keep going and drop down each and every chance you get. Head to the right, fight off some creepy undersea enemies, the hammer helps with their shields, and then keep going to the right, pulling a switch to clear your path. Once you reach a small stone platform, throw the Knight's hammer straight up to clear the path, then grapple up. Pull down all the pipes. Build a u-bend off the left pipe, attach the T-junction to the pipe on the right, and then connect them with the curve and the straight pipe. Drop down and pull the switch on top of the platform to clear the path ahead of you. Drop all the way down to the bottom, push the barrel to the right, and block it with a crate. Return to the switch, flood the chamber again, and then swim to the barrel, using it to get to the next ledge.

The Spider web in the scenery of this next section is quite deceptive, as you will be ambushed by a large wave of Mermen shortly. The first bridge will collapse after some damage, and you'll need a ranged weapon to hit the enemies off toward the right. A Spider will join the slaughter, but is quite easy to fling into the acid. Throw the switch to drain the pit toward the right, then move onward. Use the grapple to pull the acid pourer to the left, then set yourself up beneath it and grapple to the right side of it to clear the pit. Watch out for the glowing pods from now on.

Pull the acid pourer toward the left and put a crate on it to keep the acid away. Jump from the dropping platform to the right onto the acid pourer. Place another crate to keep it steady, then jump two platforms to the right and quickly take out the tentacle. Head off to the right, jump onto the swinging platform, and take out another tentacle. Quickly move to the left, up to that side, and take out yet another tentacle. There are acid pods here, so clear the path first, and the tentacle above the swinging platform will periodically spid out acid. When the danger is cleared, move on through the path and enter the mirror to finish the level.